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Biodiversity

QuestionAnswer
Alpha diversity Average species diversity in a habitat (local region). Units: OTUs (Operational Taxanomic Units). Can be measured by A) Species Richness, B) Shannon Index, C) Species Evenness
Beta diversity comparison between local and regional biodiversities
Shannon Index Measure alpha diversity. measure of the entropy (takes into account abundance and unknowns) High Shannon Index values = high biodiversity
Species Evenness (Pielou Evenness Index) Measure alpha diversity. measure of species in ratio to one another Species Eveness =1 = equal numbers of every species
Species richness Measure of alpha diversity. count of species - High species richness = high biodiversity
Species sorting Process of selecting specific species from a community by environmental conditions – including nature of the substrate
Phytoplankton Photosynthesizing organisms that are plankton - living suspended in the water column (cannot move against the water current). This can include diatoms, algae, and macrophytes
Diatoms Members of a major group of eukaryotic algae. Unicellular, some form chains of simple colonies.
Algae Aquatic eukaryotic photosynthetic organisms
Macrophytes Aquatic plants large enough to be seen easily with naked eye (distinct from phytoplankton and small algae) - no taxonomic significance
Chlorophyll a Specific form of chlorophyll used in oxygenic photosynthesis, absorbs most energy from wavelengths of violet-blue and orange-red light. (Poor absorber of green wavelengths).
Created by: rachel.mcnamee
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